APA citiranje

Northrup, H. R. (1969). The Negro in the rubber tire industry. Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania; distributed by University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Northrup, Herbert R. The Negro in the Rubber Tire Industry. Philadelphia: Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania; distributed by University of Pennsylvania Press, 1969.

MLA citiranje

Northrup, Herbert R. The Negro in the Rubber Tire Industry. Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania; distributed by University of Pennsylvania Press, 1969.